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8" Radius Blocks

5.0
  • 162 Reviews
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7-1/4" radius

Item # 0415
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9-1/2" radius

Item # 0405
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10" radius

Item # 0416
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11" radius

Item # 0406
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12" radius

Item # 0417
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13" radius

Item # 0437
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14" radius

Item # 0419
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15" radius

Item # 0420
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16" radius

Item # 0418
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17" radius

Item # 0421
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18" radius

Item # 0438
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19" radius

Item # 0439
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20" radius

Item # 0403
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New!

Flat

Item # 0440
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8" Radius Blocks

About This Item

Accurately true or change a fingerboard's radius and level frets.
We make these hardwood blocks for use with Stikit Abrasives, to radius a fretboard quickly, accurately and without guesswork.

Shaping fingerboards: use 80 through 220-grit
Leveling frets: use 220 through 400-grit

When working on compound radius fretboards, simply change blocks as you progress along the neck.

Dimensions: 8" (203.20mm) long x 2-3/4" (69.85mm) wide

See our shorter blocks for spot leveling, and for use as clamping cauls when gluing frets.

What's your radius?
Quickly find the curvature of a fingerboard or bridge with a set of radius gauges. Use them frequently to check your work as you smooth or shape a fingerboard or frets: a quick visual check keeps you from accidentally altering the shape—a mistake that's easy to make and hard to fix.

Radius Gauges


Instructions

Product Instructions

Radius Block Basics

An explanation of the different uses of a radiused sanding block.

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5.0
  • 4.78 average rating from 162 reviews
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Displaying 12 of 17
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5.0

Great purchase!

By

Verified Buyer


I've got a Squier Fretless J-bass and I found that 1) the fretlines on the board were raised very slightly and you could feel them as you move your finger along the board and that, more importantly, 2) in pursuit of super low action on the bass (since it's a fretless), the string would die out and choke at the 7th fret position on the bass excessively, under almost all conditions (either with flat neck or a little bit to a lot of bow and low string height). So I bought this block and went over the fingerboard with 220, 320, 400, 600, 800 and 1000 grit sandpapers and these two issues had been eliminated! Plus the (ebonol) board looks really beautiful now! Very smooth feel and appearance. I thank StewMac very much for a great product and a great price!

5.0

Stew Mac's got your back.

By

Verified Buyer


Received an 8"x 12R sanding block with a couple of small knots in the working face and was not happy about it but needed to use it. I sent an email to Stewmac and they sent me a perfect one and told me they didn't want the other one back. That's the way it's supposed to be! That's why I give them most of my business and have since the early '70's.

5.0

0417

By

Verified Buyer


Beautiful Flametop. This would be so cool to be painted by clear color. Good weight.

5.0

Does just what it's supposed to do, just how they say it will

By

Verified Buyer


I've built a few blocks myself and have never built one in less than 2 hrs. I needed a 12" for this last build and thew one in the last order, just to save the hassle. For fun I checked the radius against an L.S.Starrett radius gauge and found it to be spot on perfect. I then checked against my granite Rt angle surface plate and found the sides to run parallel with the radiused surface. This is a VERY well made block.

5.0

Good!

By

Verified Buyer


It is necessary to have to everyone!

5.0

Every luthier needs one

By

Verified Buyer


top notch material, easy to use

5.0

EXCELLENT 

By

Verified Buyer


EXCELLENT

5.0

Perfect for the task

By

Verified Buyer


The Wooden Radius Sanding Blocks are ideal for flushing fretboard inlays and any final sanding on the fretboard. Worked a treat!

5.0

Sanding blocks

By

Verified Buyer


Simple and robust, should last for many years. I've even used mine to level the frets.

3.0

Machining Grooves

By

Verified Buyer


The blocks I receive work just fine, but the radius of them aren't perfect. There are definite machining grooves on the radius left over from the shaping process. They're not large, and with human error taken into account during the sanding of a fingerboard they don't affect the final product a noticeable amount, but they're there none the less.

Displaying 12 of 17
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StewMac PDF Catalog, page 10 See 8" Radius Blocks
on page 10 of our StewMac Digital Catalog